Feed-water heater.



W. W. GRINDLB & J. S. SWEENY.

FEED WATER HEATER. APPLICATION FILED 1120.12.1905.

Patented July 27, 1909.

attorneyf a g. Z.

UNITED STATES PATENT OFFICE.

WILLIAM W. GRINDLE AND JARED S. SWEENY, OF DECATUR, ILLINOIS.

FEEDWATEB HEATER.

Specification of Letters Patent.

Patented July 27, 1909.

Application filed December- 12, 1908. Serial no. 467,278.

To on whom it my concern: 7

Beit known that we, House: W. Gnu:- nm and JARED S. Swneur, citizens ofthe United States, and residents of Decatur, in the county of Macon andState of Illinois, hare invented certain new'and useful Iniprovements inF zed-Water Heaters, of WhlCl'l the following is a s cification.

This invention re ates to steam boilers, and more especially to theheating of feed water therefor: and the object of the same is to producean im row-ed steam injected feed water heater which will increase thetemperature of the water leaving the injector before it enters theboiler, yet without robbing the latter of any of its steam;

To this end 'the invention consists of a. feed water heaterwhosepreferred construction. is described below and illustrated in theaccompanying dra 6 wherein- 1 is a contra vertical section through; thisdevice- -and Fig. 2 a cross section on the line H of Fig. 1. Fig. 3 is asection also on the line H showing a modification in which the jacket isomitted. Fig. 4 is a detail of the nozzle in plan view.

The object of the present invention is to utilize the heatof the steamfrom the dome to mperheat the water before it enters the boiler thatitwill not. chill the water already in' the same and may be more quicklyconverted into steam therein than if it were injected cold.

Another object is to so construct the feed water heater that the watertherein will not freeze in the injection pipe if left standing forsometime and the parts become cold.

These objects are accomplished by constructing the invention as follows:

The s ,ell or casi 1 is preferably a casting of brass ,rovi with ahorizontal partitlon 2 ucing'a lever chamber 3 at the top, an an uprightpartition 4 from the horizontal to the bottom of the shell producing asteam chamber 5 at the inlet end and a water chamber 6 at the outlet endof the shelL Around the inlet end of the shell 1 is an upright. jacket70 roducing an inlet steam passage 7 beyond tto outer and inner faces ofthe shell 1 at that end whereby the material of the entire shell is keptwarm and the contents prevented from freezing. By preference theiniector delivery pipe connects with a nipp e 8 in the bottom of thewater chamber 6, and the inner end of the nipple forms a valve seat. Thesteam pipe is connected with the top of the steam assage 7 whence thesteam leads around ell 1 to a nipple 9 in the bottom of the steamchamber 5 and also forming a valve seat. Below this nip lo the jacket mahave an opening close by a removable pug 10 to permit. insertion andremoval of arts and clcani out. One end of the c amber 3 prefera I hasan openin 11 for the insertion and removal of the ever described below,and this opening is to be closed by a plug 111.

The water valve 80 is adapted to close upon the seat in the nipple 8,its stem 81 rises through the chamber 6 and is preferably sh Juldercd asat 82 to prevent this valve from rising too high, and above the shoulderthe stem is reduced as at 83 and extends through a hole 84 in a wearbushing 100 screwed into the partition 2. The steam valve 90 is adaptedto close against the seat in the nipple 9, its stem 91 rises through thechamber butnceds no slrmlder as this valve closes u wardly, and itsupper end 93 passes throng a hole 94: in a wear bushing 100 also screwedinto the partition 2. The upper extremity 92 of plug serves as a stop tolimit the opening movement of this valve. Mounted on a ivot across thechamber 3 is a rocking ever :21 whose lon arm 28 stands over the valvestem 81 and short arm 29 stands over the valve stem 91. Both valves ma;be provided with wings 22 which guide them in their movements withintheir nipples, and both stems may be provided with removable wear pinsin their up er ends which may be replaced by others w en they becomeworn.

In Fig. l is shown a nozzle 30 whose inlet cud 31 is threaded so thankmay screw into an opening in the partition 4 with its body extendinghorizontally across the water chamber 6, and said body has a hole 3-lthrough it for the passage of the valve stem 81. Around this hole thepassageway through the nozzle is split or divided as shown at 32, andits tip 33 is directed into the pipe 6. V

The parts being constructed as above described and properly assembled,the operation of this device is as follows: Water being admitted underlow ressure from the injector delivery pipe rmscs the water valve 80.and its stem 81 by means of the unbalanced lever 21 depresses the stem91 and opens the steam valve 90 against the steam pressure as showtrlinLgSteam' passing in through the passageway 7, then enters the chamber 5and flows out through the nozzleBO into and along. pipe b-therehyheating the water within the chamber 6 through the heat of its inclosednozzle and heating the water within the pipe 6 throu h the injection oflive steam into it. Shou d steam from the chamber 5 escape into thechamber 3through the hole 94 it will have no iuifavorable eti'ect on theoperation ofthe lever, and should it. escape from this chamber throughthe hole 8-1 into the water chamber 6 it will onl' mingle with the waterpassing out throng pipe 0 and will do no harm; The water in the chamber6 will. not be under pressure suflicient 'to overcome the pressure ofthe steam within parts of the shell. \Vhen the injector is closedandthepressnre of the water reduced, the water valve will be closedautomatically by the premurc on the inlet side of the steam valve whichcloses the latter, and that motion through the lever 21 closes the watervalve.

lt obvious that the details of construction may be changed considerablywithout departing from the spirit. of our invention.

We prefer to locate the nozzle 30 in the same plane as the stem 81,which necessitates the use of the hole 34; but if they are not in thesame plane .or either is deflected from it, we need not have the holenor the branch passageway.

If a simpler and less expensive type of device were desired, the steammight be admitted directly thron h the steam passage 71 adjacent thatclose by the plug 10, as seen in F i 3, in which event the jacket 70surrounding that end of the shell could be entirely omit-ted, but asabove stated we prefer its use because it prevents freezing by keepingthe shell warm for a longer time.

What is claimed as new:

1. In a feed water heater, the combination with the shell having a leverchamber, a water chamber and a steam chamber, the water inlet leadinginto its chamber, the water outlet leading therefrom. and a water inletvalve opening inwardly: of the steam inlet leading into its chamber. aninjector nozzle leading from this chamber through the water chamber anddirected into the water outlet, a steam inlet. valve closing inwardly,the stems of said valves leading across their respective chambers andinto the lever chamr, wear pins on said stems, and a lever pivotedwithin the lever chamber with its arms contacting with said pins.

2. In a feed water heater, the combination with the shell having a leverchamber, a water chamber and a steam chamber, the water inlet leadinginto its chamber, the water out let leading therefrom, and a water inletvalve opening inwardly: of the steam inlet leading into its chamber, aninjector nozzle leading from this chamber through the water chamher anddirected into the water outlet, a steam inlet valve closing inwardly,the stems of said valves leading across their respective chambers andinto the lever chamber, a rocking lever pivoted within the latter andengaging the extremities of said stems, and stops for limiting theopening movement of the valves.

3. In a feed water heater, the combination with the shell having a waterchamber and a steam chamber, water and steam inlet valve seats in thewalls of their respective chambers, valves thereon having stems, and arocking lever pivoted to the shell with its arms engaged by said stems;of a water inlet leading to and a water outlet leading from its chamber,a nozzle leading from the steam chamber and directed into the wateroutlet, a jacket cast around the shell and providing a steam passagecommunicating with the steam inlet va re, and a steam inlet pipe leadingto said passage.

=1. In a feed water heater, the combination with the shell having alever chamber. a water chamber and a steam chamber, water and steaminlet valve seats at the bottom of their respective chambers, valvesthereon havin stems extending into the lever chamber, an a rocking leverpivoted therein with its arms engaged bv said stems; of a water inlet1eading to am a water outlet leading from its chamber, a nozzle leadingfrom the steam chamber through the water chamber and directed into thewater outlet, :1 jacket cast around the shell and providing a steampassage communicating at the bottom with the steam inlet valve. and asteam inlet pipe leading to the top of said passage.

in testimony whereof we sign our names in the presence of twosubscribing witnesses. this the -Tth day of December, 1908.

WILLIAM W. GRINDLE. JARED S. SVEENY. l-Vitnesses:

1']. F. hICDONALD, Rosa Voencnnn.

